Understanding and Designing Serviceguard Disaster Recovery Architectures

Support for all Metrocluster products
The SADTA feature is available in all Metrocluster products. This means disaster recovery for
complex workloads can be configured when using Metrocluster with Continuous Access P9000
and XP or Metrocluster with Continuous Access EVA or Metrocluster with 3PAR Remote Copy or
Metrocluster with EMC SRDF.
Understanding Three Data Center Disaster Recovery Solution
NOTE: The Three Data Center Disaster Recovery Solution is not supported on Linux operating
system.
A Three Data Center configuration consists of two Serviceguard clusters. The first cluster, which is
a Metrocluster, has two data centers that make up the Primary data center (DC1) and Secondary
data center (DC2). The second cluster, typically located at a long distance from the Metrocluster
sites, is the Third Data Center (DC3); it is configured as a recovery cluster. These two clusters are
configured as Continentalclusters, as shown in Figure 18
Figure 18 Three Data Center Disaster Recovery Architecture
Metrocluster Region
Serviceguard
Cluster
Region
CANL link
Continentalcluster Region
Site 1
VOL
JNL
Site 2 Site 3
ICAP
Converter
FC/IP
Converter
ICAP
Converter
FC/IP
Converter
DWDM
XP12000
Integrity
Superdome
Integrity
Superdome
Integrity
Superdome
XP12000 XP12000
DWDM
VOL
VOL
JNL
SG Heartbeat
and
CA-Sync link
This provides bi-directional automatic failover across sites within a Metrocluster and fully automated
push-button recovery mechanism at the far site. The Metrocluster recovery acts as the near DR
solution and the Continentalclusters recovery acts as the far DR solution.
NOTE: This solution is integrated only with HP XP and P9000 Storage. See the guide Building
Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000
and XP A.11.00 for information on the features supported and the steps to configure this solution.
Understanding Virtualized Environments configured in Metrocluster or
Continentalclusters
Configuring HP-UX Virtual Partitions (vPar) or Integrity Virtual Machine (Integrity VM) as a
Serviceguard package or a Serviceguard node on HP-UX and configuring VMWare virtual machines
42 Metrocluster and Continentalclusters